21559876

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^3$

素因数の和:121

約数の個数: 48

約数和(自身を含む): 44558640

約数和(自身を除く): 22998764

約数列:

[1, 2, 4, 13, 17, 26, 29, 34, 52, 58, 68, 116, 221, 377, 442, 493, 754, 841, 884, 986, 1508, 1682, 1972, 3364, 6409, 10933, 12818, 14297, 21866, 24389, 25636, 28594, 43732, 48778, 57188, 97556, 185861, 317057, 371722, 414613, 634114, 743444, 829226, 1268228, 1658452, 5389969, 10779938, 21559876]

約数ペア:

[(1, 21559876), (2, 10779938), (4, 5389969), (13, 1658452), (17, 1268228), (26, 829226), (29, 743444), (34, 634114), (52, 414613), (58, 371722), (68, 317057), (116, 185861), (221, 97556), (377, 57188), (442, 48778), (493, 43732), (754, 28594), (841, 25636), (884, 24389), (986, 21866), (1508, 14297), (1682, 12818), (1972, 10933), (3364, 6409)]